a Ramon Alvarez 12 éve
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Biology 311D Concept Map - RAA2446
The concept map delves into various aspects of evolutionary biology, highlighting the mechanisms and factors influencing changes in gene frequency over generations. It discusses natural selection and its three modes—
Megnyitás
Biotic Potential Always dependent on phenotype Factors that control population growth Genetic Drift Growth Curves Insufficient biological resources Logistic Growth (S-Curve) Emigration Mutation Random change in gene frequency
from one generation to another Primates Evolved (60M Years Ago) Selection Homo Neanderthal Resided in Europe Exponential Growth (R-Curve) Test 1 1. Food
2. Better medicine
3. Better sanitation Human Evolution 1. Habitat destruction
2. Hunting
3. Species introduction
4. Disease
5. Hydridzation Factors:
Hiertability and Selection Differential 1. Stabilizing
2. Directional
3. Disruptive Homo Habilus (2M-1.8 M Years Ago) Ardiditicus (5 M Years Ago) Population Regulation Homo Sapien (350,000 Years Ago) Enviromental Resistance Founder effect and bottle neck effect Test 2 "Road of Homosabiens" 1. Insufficient Food, Water, & Nutrients
2. Disease
3. Predation
4. Competition
5. Insufficient living space
6. Adverse weather conditions Extinction Density Dependent mortality Hardy-Wemberg Equilibrium 3 modes of Natural Selection Test 3 Homo Erectus (1M Years Ago) Random change in genetic code Died out 35,000 Years Ago Evolution 5 major extiction Each locus has a different mutation rate Change in gene frequency from one generation to another 1. Rate of Reproduction
2. Resistance to Adverse Conditions
3. Defense Mechanisms Cretaceus (65 M Years Ago):
Nearly all dinasaurs went extinct 95% Harmful
4% Neutral
1% Beneficial Population Growth Biology 311D Concept Map - RAA2446 Mutation and Genetic Drift
